"A IS FOR AGGREGATE." Summit Film Productions, 1984. Sound Filmstrip. 1-60 frames, colour. $35.00. Includes 1 audiocassette, 1 booklet with script. Distributed by Summit Film Productions, R.R. #22, Cambridge, Ont., N3C 2V4. Grades 4 and up Reviewed by the Evaluation Committee of the Board of Education for the City of North York. Volume 14 Number 2 1986 March Produced for the ministry of natural resources, this sound filmstrip deals with mineral aggregates: sand, gravel, and crushed stone. Emphasized is the fact that mineral aggregates are among the non-renewable natural resources. Other aspects discussed are extraction methods, government regulations, everyday uses, and pit rehabilitation. The visuals are matched well with the narration. This filmstrip would be a valuable acquisition. Recommended. From the Evaluation Committee of the Board of Education for the City of North York.